Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54905 found under Spacer Ring by Crane Pumps And Systems Inc. The National Stock Number assigned to this part is 5365009324869, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 54905.